Method for securing a metal collar or grummet in the orifice of a metal barrel and elements used for this purpose



Sept. 19, 1967 DEFAUW 3,342,366

METHOD FOR SECURING A METAL COLLAR OR GRUMMET IN THE ORIPICE OF A METAL BARREL AND ELEMENTS USED FOR THIS PURPOSE Filed Oct. 1, 1964 2 Sheets-Sheet 1 INV-ENTOR. MARCEL DEFAUW BY GLLUMMJAK g ATT OYLNE'BS Sept. 19, 1967 M DEFAUW 3,342,366

METHOD FOR SECURING A METAL COLLAR OR GR'JMMET IN THE ORIFICE OF A METAL BARREL AND ELEMENTS USED FOR THIS PURPOSE Filed Oct. 1, 1964 2 Sheets-Sheet 2 INVENTOR. MARCEL DEFAUW 6h ()Aufckkt ATTOKLN E55 United States Patent M METHOD FOR SECURING A METAL CQLLAR 0R GRUMMET IN TIE ORIFICE OF A METAL BAR- REL AND ELEMENTS USED FOR THIS PURPGSE Marcel Defauw, Ghent, Belgium, assignor to Rheem Manufacturing Company, San Francisco, Calif.

Filed Oct. 1, 1964, Ser. No. 400,648 Claims priority, application Belgium, June 22, 1964, 43,744, Patent 649,561 14 Claims. (Cl. 22039) ABSTRACT 0F THE DISCLOSURE A metal collar or grummet is secured in the opening of a metal barrel by inserting an elastic ring into a U- shaped channel provided in the collar and deforming a neck surrounding the opening so as to form in the neck a V-shaped annular groove tightly engaging the edges of the 'U-shaped channel.

This invention is concerned with the art of fixing a metal collar or grummet in the orifice of a metal cask or barrel, said collar or grurnmet being adapted to receive a bung or similar stopping device, a discharge conduit or spout, a cock or similar devices.

The first object of the invention is to ensure perfect tightness of said fastening.

According to a second object of the invention the fastening may be carried out rapidly and effectively with very simple means.

According to another object of the invention said fastening may be carried out in such a way that in spite of the use of a collar with circular cross-section, a very strong unction is obtained excluding any unwanted slidwith respect to the peripheral edge surrounding the orifice of the barrel and also excluding any dislocation or rotary movement of said collar.

Still another object of the invention concerns the elements used in carrying out this fixing method, which are of simple shape, relatively light weight and of easy economic manufacture.

Substantially the fixing method according to the inventlon comprises the steps of interposing an elastic ring between the erect neck surrounding the orifice of the barrel and a channel provided in the peripheral face of the metal collar to be secured in said orifice, and deforming said neck so as to produce a circumferential indentation therein, which penetrates into said elastic ring whilst completely enclosing the latter between said indentation and the bottom and the side walls of said peripheral channel in such a way as to cause said elastic ring to exert elastic pressure on all parts delimiting said enclosure. By this arrangement a surprisingly solid junction is obtained between the metal collar and the surrounding neck of the barrel orifice, said junction being of such a quality as to obviate the necessity of providing any fiat parts or polygonal shapes on said collar, though such provisions would not be excluded.

This fixing method is of course subject to numerous variations as to the shapes and dimensions of the various parts used in its application.

Another advantage of this fixing method, for certain shapes of the barrel neck, resides in the opportunity of providing a plurality of gaskets which cooperate in largely 6 increasing the reliability of the fastening thus obtained.

3,342,366 Patented Sept. 19, 1967 Moreover this fastening method facilitates the known use of encapsulation.

In order to illustrate the fixing method according to the invention and the manner in which this method is to be carried into effect, some non-limitative examples will be described in detail hereinafter with reference to the accompanying drawings, in which:

FIGURE 1 shows in radial sectional view a metal collar secured in the orifice of a metal barrel using the method according to the invention;

FIGURE 2 shows on an enlarged scale the part indicated by A in FIGURE 1;

FIGURES 3, 4, 5 and 6 show, in radial sectional view, four variants of the embodiment shown in FIGURE 2;

FIGURE 7 shows in half-sectional representation, on the left side the various parts going into the assembly in their original state before mounting, and, on the right side, an exploded view of the assembly;

FIGURE 8 shows in radial sectional view, on an enlarged scale, the assembly of the parts shown in FIGURE FIGURE 9 shows a variant of the assembly shown in FIGURE 8, using the arrangement as indicated in FIG- URE 6.

In the various examples the barrel is represented at 1, the bung hole at 2, the neck surrounding said hole at 3, the metal collar at 4 and the elastic tightening ring and gasket at 5.

In all embodiments the elastic ring 5 is housed in a peripheral channel 6, the surrounding neck 3 being subjected to deformation so as to form a circumferential indentation 7 penetrating deeply into said elastic ring 5, the flanks of said indentation being forced into contact with the edges 8-9 of said peripheral channel 6, said ring 5 being compressed so as to exert coniderable elastic pressure as indicated by the arrows f in FIGURE 2.

In this way adhesive forces of surprising strength are created between the collar 4 and said neck 3 ensuring an extraordinarily strong fastening of said collar and a perfect tightness of the joints between adjacent parts.

In the example shown in FIGURES 1 and 2 the upper edge of the erect part 3 extends a short distance beyond the upper edge of the channel 6; in FIGURE 3 the former extends upwards to form a cylindrical surface 10 surrounding the upper part of the collar 4, and in FIGURE 4 said extension 10 extends around the upper edge of the collar 4 to form a ring-shaped part 11 in contact with the annular upper face of said collar 4. In the example of FIGURE 5 an arrangement similar to that of FIG- URE 4 is shown, in which an elastic or plastic gasket 12 is interposed between said bent-over edge 11 and the underlying surface of the collar 4. The latter part may have various shapes in cross section. One variant is shown in FIGURE 6, where the upper part 13 of the collar has a rounded shape, the upper part 11 of the neck 3 of the barrel being applied against said rounded part of the collar. In the same way as in FIGURE 5 a gasket may be compressed between said rounded parts 11 and 13.

In the example shown in much detail in FIGURES 7 and 8 one notices again the barrel 1, the bung hole 2, the neck 3 surrounding said bung hole, the collar 4 provided with inner threading and a peripheral channel 6, the ring 5 of relatively elastic material, a gasket 14, the bung or plug 15, a gasket 16 and a capsule 17. In

5 this embodiment, after the gasket ring 5 has been inserted in the peripheral channel 6 of the collar 4, the

latter then being inserted in the erect portion 3 surrounding the bung-hole, a deep indentation 7 is produced in said neck 3 whereby said elastic ring 6 is completely enclosed and deformed and compressed so as to produce considerable internal stresses in said ring, the latter being transmitted and applied to the walls of said peripheral channel 6 as well as to the corresponding part of the indented portion 7 of the neck 3. As in FIGURE 4, the upper part 11 of said neck is folded over against the upper'face of the collar 4. A plug 15 of known type is screwed into said collar with a gasket 14 being interposed advantageously between said folded-over part 11 of said neck and the adjacent part of the plug. The whole assembly is capped by a capsule 17 with a gasket 16 being interposed as shown in the drawing, whereafter the portions covering the indented part 7 of the neck 3 are subjected to deformation to cause said portions together with said gasket 16 to penetrate into said indentation 7. It will be observed that in this way an efficient threefold-sealed closure is obtained. Preferably said gasket 16 will be fitted prior to encapsulation in the outer groove formed in the neck after the collar has been fixed. This gasket 16 will then be flattened owing to the deformation of the capsule when the latter is fixed.

In FIGURE 9 the same elements have been used as those described in relation to FIGURE 8, but with shapes adapted as shown in FIGURE 6.

In the various embodiments described the barrel 1, the collar 4 and the capsule 17 are made of metal, whereas the plug 15 may e.g. consist of a plastic material immune from attack by the contents of the barrel, as will also be the case with the natural or synthetic materials used for the gaskets 5, 14 and 16.

It will be seen and understood that in all cases the fastening of the collar according to the invention is effected by applying force to the portions of the erect neck 3 which face the channel 6 of the collar 4, so as to compress the elastic ring 6 and to contact the upper and lower edges 8-9 of said collar, generally to exert peripheral pressure substantially directed towards the axis of the assembly, preferably at a level mid-way between the edges of said channel. This concentric pressure may be applied with the aid of screws or any other appropriate tools, and can easily be obtained in a press comprising simple means for holding the parts to be assembled in their respective positions.

The economy of this fixing method resides also in the fact that the collar may be made from small pipe sections of cylindrical shape provided with inner threading and an outer peripheral channel. The erect neck 3 is formed from the sheet material of the barrel itself, said neck following closely the outer cylindrical surface of the collar on a substantial part of the height thereof.

The invention extends to all embodiment and variants, particularly as regards variations in the shapes and dimensions of the different constituent parts and the possible addition of auxiliary parts and devices of all kinds. In a a general way the invention concerns the fixing method, casks and barrels adapted for the application thereof as well as all constituent parts of the assembly.

What I claim is:

1. Method for securing a metal collar in the orifice of a metal barrel, which comprises the steps of interposing an elastic ring between the erect neck surrounding the orifice of the barrel and a U-shaped channel provided in the peripheral face of the metal collar to be secured in said orifice, and deforming said neck at the periphery thereof so as to form an annular groove of V-shaped cross section therein which penetrates into said peripheral channel in said collar while completely enclosing the ring between said indentation and the bottom and side walls of said peripheral channel, and contacting the outer edges of said channel along two continuous circumferential lines of contact between the deformed portion of the neck and the edge portions of the channel 4: so as to cause said elastic ring to exert elastic pressure on all parts delimiting said enclosure and producing a fluid sealed and interlocked joint between said neck and collar.

2. Fixing method as claimed in claim 1, characterized in that after the formation of said indentation, when said collar is secured, said indented neck portion penetrates deeply into said peripheral channel of said collar so as to forcibly compress the elastic ring housed therein, whilst resting against the outer edges of said channel, the crest of said indented portion being located approximatively mid-way between upper and lower side walls of said channel.

3. Fixing method as claimed in claim 1, characterized in that the height of said neck is such that after formation of said indentation, when the collar is secured, this height is smaller than that of said collar.

4. Fixing method as claimed in claim 1, characterized in that the height of said neck is such that after formation of said indentation, when the collar is secured, this height is equal to that of the collar.

5. Fixing method as claimed in claim 1, characterized in that the height of said neck is such that after formation of said indentation, when the collar is secured, this height exceeds the height of said collar, the exceeding portion being folded over against the annular upper face of said collar.

6. Fixing method as claimed in claim 5, further comprising the step of interposing a gasket between the bentover upper portion of said neck and the underlying upper face of said collar.

7. Fixing method according to claim 1, further comprising the steps of screwing a threaded plug of a type known into the inner threading of said collar, interposing a gasket between said plug and said collar, and compressing said gasket between said plug and said bentover part of said neck.

8. Fixing method as claimed in claim 1, further comprising the step of capping said collar secured within said indented neck and closed with the plug screwed therein, with a capsule, the cylindrical part of said capsule being provided with a circumferential indentation engaging the corresponding indentation formed in said neck and interposing a gasket between said engaging indented portions.

9. Fixing method as claimed in claim 7, further comprising the step of compressing the gasket, when the plug is screwed in, between said plug and the underlying bentover portion of said neck which is applied against the upper annular face of said collar.

10. Fixing method as claimed in claim 1, characterized in that the barrel and the collar are made of metal, whereas the gasket ring is made of a natural or synthetic elastic material.

11. Fixing method as claimed in claim 8, further comprising the step of inserting prior to encapsulation a gasket ring in the outer peripheral groove formed in said neck after the fastening of said collar, and then placing the capsule so as to have its cylindrical portion facing said gasket, the latter being flattened between said groove and said capsule when the encapsulation is carried into effect.

12. Closure device for an orifice of a vessel, said orifice being enclosed by an upstanding neck and said closure device comprising a collar having inner threads and a peripheral channel with a substantially U-shaped cross section, said collar being located in said orifice and being surrounded by said neck; an elastic ring located in said channel; said neck having a peripheral annular groove of substantially Vshaped cross section penetrating in said channel against said elastic ring and contacting said channel along two continuous circumferential lines, thereby producing a fluid sealed and interlocked joint between said neck and said collar, said neck being bent over the upper portion of said collar; a plug screwed in said inner threads of said collar; a capsule mounted 13. Closure device according to claim 12, comprising 5 a second gasket interposed between said bent-over portion of said neck and an underlying portion of said col lar.

14. Closure device according to claim 13, comprising a third gasket interposed between said plug and said bent- 1 over portion of said neck.

References Cited UNITED STATES PATENTS Francis 29--510 X Robinson 22039 Evenblij 285204 X Frekko.

Dearing et al. 29-511 X CHARLIE T. MOON, Primary Examiner. O 

1. METHOD FOR SECURING A METAL COLLAR IN THE ORIFICE OF A METAL BARREL, WHICH COMPRISES THE STEPS OF INTERPOSING AN ELASTIC RING BETWEEN THE ERECT NECK SURROUNDING THE ORIFICE OF THE BARREL AND A U-SHAPED CHANNEL PROVIDED IN THE PERIPHERAL FACE OF THE METAL COLLAR TO BE SECURED IN SAID ORIFICE, AND DEFORMING SAID NECK AT THE PERIPHERY THEREOF SO AS TO FORM AN ANNULAR GROOVE OF V-SHAPED CROSS SECTION THEREIN WHICH PENETRATES INTO SAID PERIPHERAL CHANNEL IN SAID COLLAR WHILE COMPLETELY ENCLOSING THE RING BETWEEN SAID INDENTATION AND THE BOTTOM AND SIDE WALLS OF SAID PERIPHERAL CHANNEL, AND CONTACTING THE OUTER EDGES OF SAID CHANNEL ALONG TWO CONTINUOUS CIRCUMFERENTIAL LINES OF CONTACT BETWEEN THE DEFORMED PORTION OF THE NECK AND THE EDGE PORTIONS OF THE CHANNEL SO AS TO CAUSE SAID ELASTIC RING TO EXERT ELASTIC PRESSURE ON ALL PARTS DELIMITING SAID ENCLOSURE AND PRODUCING A FLUID SEALED AND INTERLOCKED JOINT BETWEEN SAID NECK AND COLLAR.
 12. CLOSURE DEVICE FOR AN ORIFICE OF A VESSEL, SAID ORIFICE BEING ENCLOSED BY AN UPSTANDING NECK AND SAID CLOSURE DEVICE COMPRISING A COLLAR HAVING INNER THREADS AND A PERIPHERAL CHANNEL WITH A SUBSTANTIALLY U-SHAPED CROSS SECTION, SAID COLLAR BEING LOCATED IN SAID ORIFICE AND BEING SURROUNDED BY SAID NECK; AN ELASTIC RING LOCATED IN SAID CHANNEL; SAID NECK HAVING A PERIPHERAL ANNULAR GROOVE OF SUBSTANTIALLY V-SHAPED CROSS SECTION PENETRATING IN SAID CHANNEL AGAINST SAID ELASTIC RING AND CONTACTING SAID CHANNEL ALONG TWO CONTINUOUS CIRCUMFERENTIAL LINES, THEREBY PRODUCING A FLUID SEALED AND INTERLOCKED JOINT BETWEEN SAID NECK AND SAID COLLAR, SAID NECK BEING BENT OVER THE UPPER PORTION OF SAID COLLAR; A PLUG SCREWED IN SAID INNER THREADS OF SAID COLLAR; A CAPSULE MOUNTED ON SAID COLLAR AND HAVING A CYLINDRICAL PORTION WITH A CIRCUMFERENTIAL INDENTATION ENGAGING SAID V-SHAPED GROOVE, AND A GASKET INTERPOSED BETWEEN SAID INDENTATION AND SAID GROOVE. 